Posted December 23, 2014
And here we go!
Some compression tests on a 20G tar archive (wasteland-2.tar, Linux version 1.7.0.11 from GOG), with a 3.4GHz CPU (4 cores):
Some compression tests on a 20G tar archive (wasteland-2.tar, Linux version 1.7.0.11 from GOG), with a 3.4GHz CPU (4 cores):
gzip -6 (default compression level)
compression ratio: 45.9%
archive size: 11G
compression time: 16m
decompression time: 6m
gzip -9 (maximum compression level)
compression ratio: 46.1%
archive size: 11G
compression time: 40m
decompression time: 6m
xz mono-threaded -6 (default compression level)
compression ratio: 57.0%
archive size: 8.4G
compression time: 2h35
decompression time: 13m
xz mono-threaded -9 (maximum compression level)
compression ratio: 58.1%
archive size: 8.1G
compression time: 3h29
decompression time: 20m
xz multi-threaded (2 threads) -6
compression ratio: 56.9%
archive size: 8.4G
compression time: 1h13
decompression time: 14m
xz multi-threaded (2 threads) -9
compression ratio: 58.0%
archive size: 8.2G
compression time: 1h35
decompression time: 14m
xz multi-threaded (4 threads) -6
compression ratio: 56.9%
archive size: 8.4G
compression time: 40m
decompression time: 12m
xz multi-threaded (4 threads) -9
compression ratio: 58.0%
archive size: 8.2G
compression time: 55m
decompression time: 12m
compression ratio: 45.9%
archive size: 11G
compression time: 16m
decompression time: 6m
gzip -9 (maximum compression level)
compression ratio: 46.1%
archive size: 11G
compression time: 40m
decompression time: 6m
xz mono-threaded -6 (default compression level)
compression ratio: 57.0%
archive size: 8.4G
compression time: 2h35
decompression time: 13m
xz mono-threaded -9 (maximum compression level)
compression ratio: 58.1%
archive size: 8.1G
compression time: 3h29
decompression time: 20m
xz multi-threaded (2 threads) -6
compression ratio: 56.9%
archive size: 8.4G
compression time: 1h13
decompression time: 14m
xz multi-threaded (2 threads) -9
compression ratio: 58.0%
archive size: 8.2G
compression time: 1h35
decompression time: 14m
xz multi-threaded (4 threads) -6
compression ratio: 56.9%
archive size: 8.4G
compression time: 40m
decompression time: 12m
xz multi-threaded (4 threads) -9
compression ratio: 58.0%
archive size: 8.2G
compression time: 55m
decompression time: 12m